Deactivate Coursepress Theme. Activate Scribe

Hi,
I have started building a site using Coursepress Pro and its theme, Coursepress.
I have tried changing the them to Scribe.
When I do, I see the Scribe template-- School of Bookbinding, ipsum lorem etc
My existing pages and posts are hidden in there somewhere- but very well hidden.
I have not tried dragging them all out yet because when I try other themes from WP they have so far, and almost magically, automatically recreated my site.
Meaning the only thing I see are my posts, pages simply rearranged to the new theme.

Is there a reason this has not happened with Scribe?
Is there a box I may not have checked? (I am a coding=what? human.)

Thanks for your help,
Peter